Add a watermark to a screenshot with PHP

By default GrabzIt adds the 'GrabzIt' watermark onto screenshots, animated GIF's and PDF's created with a free package. However GrabzIt also enables developers on any paid package to define thier own custom watermarks. These watermarks can be added to image screenshots, PDF screenshots and animated GIF's.

A custom watermark is definined by setting an identifier, along with the file path of the watermark image that is to be uploaded, as well as the position where the watermark should appear on the page. How the position of the watermark is defined and more is specified in the AddWatermark documentation.